Overwhelmed SAHM of one. Help

I could really use some advice. My son is 2 1/2 and he’s the absolute love of my life. But if I’m honest, I’ve felt so disconnected from him for a while now and most days I feel like he hates me. When I try and talk to him (simple things like hey do you want some breakfast? What can I make you? And also more disciplinary things like please don’t hit me or please don’t throw the toys etc) he completely ignores me. He enjoys when I play with him but most days I feel like I struggle to find the time to sit down and play for more than 10 minutes because I get so overwhelmed by everything else I need to do. My partner usually goes to work first thing after we all get up and is home in time for dinner to be made. Typically he’ll shower with our son and they hang out while I clean the house up and let them have that little bit of time together. Then once I go to put our son down, he does dishes and that’s about it for help around the house. I do everything by myself. It’s up to me to make any phone calls, pay bills as they come in, do all the laundry, cook every meal, grocery shop every week, clean up from every meal. On top of that, I was recently diagnosed with pcos and I have a lot of changes I’m supposed to make to improve my health. If my blood work isn’t changed by February my midwife is going to turn to medication. She said I need to take it serious. I want to. I just feel like I have so much on my plate that I don’t even know where to start each day. I wake up overwhelmed every single day. I don’t have family to help me. I have very few friends, always been more of a loner. I feel like I’m failing in every area of my life. I had a breakdown today and called my husband and said I just want to leave and not be a parent anymore and he can take care of our son because I’m just a terrible mother and I haven’t been who I want to be for him. Obviously I’m not actually going to leave but I’m so overwhelmed that I don’t know what to do. Mostly it was a cry for help. I love my son and would never abandon him. If anyone has any advice, I’m ready to hear it.